Coin changer



F. E. WALLIN Jan. 8, 1952 COIN CHANGER Filed Aug. 1e, 1946 4 Sheets-Sheet 1L Jan. 8, 1952 F. E. wALLlN 2,581,502

COIN CHANGER F". E. WALLIN COIN CHANGER Jan. 8, 1952 4 Sheets-Sheet 3 Filed Aug. 16, 1946 Jam 8, 1952 F. wALLlN 2,581,502

COIN CHANGER Filed Aug. 16, 1946 4 4 sheets-sheet 4 Patented Jan. 8, 1952 UNITED c lS'IU'IES PTEN T GFF ICE 2,581,502 COIN'CHAGR Fred Er Wfllg- St. Louis,s M.,= assignor tof National Slug R'ejectors, Inc., St. Louis, Mo., a corporation of `Missouri Appicaioniiigustis, 1946; serian No; 691,065

This" invention relatesin general to kcoin" control apparatus and more particularly tolamechfanismfor controllingr vendingl and' publioservice devicesand the like, whereby? afrneinber of? the public may deposit coins of dii'erent denomination and automatically be" credited with `a; prede'- terrnined-unit` of value to operatethe device-fand receive in change coinso'f predetermined Value, Whensllol'i depositis inexcess of theS`aid--unitl0f value;

Coin changers previous to this inventionwere notf only excessively complicated, troublesome, and expensive tol manufacture; but eouldbe fraudulently operated by many artices Well known in this arti The novel features einbracedinthe 1o'reseritin` ventionovercome the above objections' byft'hevuse (ifl a Combinationofeleetrioand mechaniial e1e" 'ments cooperating` with a` highly eiiicie'rit slug rejector in which coingv of different denomination are inserted in a single entry, sortedtoldenomination, and tested for validity beforelthecha'ng'e making mechanism and its associated vending ,deL vice is operated.

The principal featuresr and? model of operation of "the invention'areiapplicable to aWide variety ofAl different coins andrnay bei used to control various types of vending machine'syc'oin phonographs and the like, which are adaptable ttf-elecL tric initiation. Forclarit'y, the mechanism shown in' the drawings and hereinafter described.`4 is adapted to a unit-sale of ve cents; and its opera"- tin is limited to' the deposit'iof` United. States nickels, dimes and" Aquarters. and` it1wi11lbe1ap= parent that-the principles and features employed in this invention areapplicable to `alargfe variety of different coinsand coins of'differentdenominations, as Well asdiiferent units ofvended value'.

Av principal object of theinventionistheprovisionof a combination of a multiple `coinslug ejector, coin sorter; and electroeinechanical mechanism adapted to operate an electrially initiated'ven'ding or service machine Wherebyfsa'id machine will deliver to a user aipre'dete'rmined unit of sale-uponthe depositata-` predetermined coinof minimum value, and'When-a coin-of larger denomination is inserted thereimthe use'rlxvilliree ceive a unit saie-fromthe said" machine; andthe difference between the value of" tlie said Juniti sale and the value of tliecoin deposited; infceii'slof said minimum value.

A further object of the invention is the pivision` of an electro-mechanical coin changing mechanism responsive to the deposit of a 'predetrminedcoin of minimum value,y to electrically 2'. operate a vending or serviceinacnine to' deliver a single unit sale of predetermined value, and upon the deposit offcoin of greater-Value tlianthe'sald coin of niininium-valuetooberatesaid machine', to" dlivea single unit-of value and simultane-a ou'sl'i` delivercorctehan'ge ln-coins of s'aidllninif muni vali-ie from' 'a reservoir therein, including inea'isfr ieplenishi'ngsaidv4 reservoir from slibsequent' deposits of` coinsofsid minimum value;

Al further object-"ofv the invention provides E'fora pliirality of coiii-sponeive ei'o'tries'witehs-foi' energizinga 4Inoio'i" diiven` Coin dispenser; including rneansfor restoring said stilitclfie'sto their nor-'mal inoperative positions when apredetermined i'iuniloerI of coinsv` of'v Anirii'minI value have been dispensed v A* further olojeczt of the `invention'isth'eijroviision of anfelectricall-ydriven electroemagnetiea'lly entrolledlcoinfs'lide fori seduenti"ally d-ispensinga predetermined k'number ofcoins of fminimu'rn lvalue ironia res'eivoirl Ari'oth'e-r obj ectI offtneinven'tion is the rprovision 0f eict-nfiag-n'etic means* in (soifnbinttinil.=l With ae'din" cliangvi'rug''mecl'iaiiism` whereby the, deposit of a coin of greater value than the coin ofniini'- mum unit sale.V Will loe automatically returned Whe'nti'ie coinre'se'rv'oir in said i changeemaking niechanisnilis emptv Another olijectlofthe invention is the provision of` 'anelli-changing mechanism h'aviifig-ia plurality of' coin -entry passages, .eachsaidpassagefadapted tof receive coin of differenti denomination and-1a coin dispensing ineens for? successively dispensing coins-oflinininium valuefio'm a reservoir, anadditional ine'an's foroperating"saiddispensing means, including'ielectromechanical means for restoring the coin-changer to normal condition when said dispensing mechanism has completed-its function;

A further! object-ofi theinvention `is ythe prow'; sionin a coin lchangerof means fori sorting .coins of predetermined` denomination' and automat# cally 'ooerating ads'pensingmechanism' forvalue irieiicess ofY ai predetermined-unit soie, means-foi' depesitof accepted eoins'- inl-a nfioney" bornand means for replenishing coins of minimum value iiif said reservoir', includingA eiectricf initiating means for-avending'or-'serviee-imachine.

These and other ejects lof1 the invention appear one @nibodiiliit` hereinafter dBScribed 'and shown in the drawings in'wnieh:

Fig. 3 is a top plan view of the mechanism shown in Fig. 1 taken through section line 3-3 Fig. 1.

Fig. 4 is a fragmentary side View of the mechanism shown in Fig. l taken through section line 4-4 Fig. 1.

Fig. 5 is a fragmentary view of mechanism shown in Fig. 2 taken generally through section line 5-5 Fig. 2.

Fig. 6 is a plan view of the mechanism taken through section line 6 6 Fig. 1.

Fig. 7 is a plan View of the mechanism taken through section line 1-1 Fig. 1.

Fig. 8 is a plan view taken through section line 8-8 Fig. 1.

Fig. 9 is a fragmentary perspective diagram matic view of a switch-holding means alternate to the means shown Fig. 1.

Fig. 10 is a schematic wiring diagram in the device shown Fig. 1 including circuit for operating a typical vending machine.

Referring to Figs. 1 and 2, a main frame i serves as a housing for the entire device. A combination slug rejector and coin sorter 2 is detachably positioned inthe upper part of the frame by well known means not shown. Since this device is well known in the art further description Will be omittted other than to state a single entry 3 is provided for'the insertion of coins of three denominations, namely nickels,

dimes and quarters. A coin rejection passageway 4 in the slug rejector is shown positioned above and adjacent to the entranceV of coin return chute 5 secured to frame I having an exit 5 .which exit is usually connected to a return cup, not shown, in a vending machine. The slug rejector through aperture I4. When at rest the switchl arm I2 is positioned as shown in Fig. 1. A switch I5 also secured to bracket 1 is the same as switch II except that its operating arm I6 is provided with a projection I1 extending into passageway 9. A switch I8 secured to bracket 'I is also the same as Ilexcept that its arml I9 has a projection 2|! extending into. the passageway Ill. Switch arms I2, I6 and I9 are made of ferrous metal and are normally urged in their upward positions as shown in Figs. 1 and 2 by springs within the switches, not shown.

Permanent magnet 2|, preferably made of Alnico alloy is secured to bracket 1 beneath the switch arms I6 and I9 only as shown Figs. 1 and 3.

It is apparent that a flve cent coin descending in passageway 8 will impinge upon projection I3 of switch arm I2 and momentarily close the switch II as the coin continues its downward movement in the passageway. Y

It is also apparent that when a dime and a quarter are deposited in passageways 9 and IIJ respectively, they will encounter projections I1 and and displace the arms I6 and I9 in a downward direction. to close switches I5 and I8, ,2

which switches will remain clsed by virtue of the magnet 2I attracting and holding their arms I5 and I9 in their downward displaced positions. As in the case of the nickel, the coins will con tinue their downward travel which movement at strategic positions in gravity type slug re-V jectors will reject coins inserted therein. In this case when the device 22 is electrically energized the slug rejector and sorter 2 operates in a normal Y manner, and when the device is de-energized, the projections 25 and 26 will project into passageways, not shown, and reject dimes and quarters deposited in entrance 3, into passageway 4, and thence to exit S.

Relay 21 secured to frame I has a spring returned armature 28 to which is iixed a projection member 29, the end of which is adapted to move in and out of the ve cent passage in the rejector. When the relay is electrically energized, the rejector will operate in normal manner and accept five cent coins, and when the relay is de-energized a nickel deposited in the entrance 3 will be ejected into the rejection passageway 4 and thence to exit 6. Relay 21 also operates a double pole single throw switch 39 which will be hereinafter described. Vending relay 3| is resiliently secured to frame I by springs 32 and 33 and includes a dual snap switch 34. This relaymay be either part of the Vending machine or part of the change maker as shown, but in either case the resilient mounting is provided to prevent fraudulent operation by shock.

An electric motor 35, having a built-in speed reducer shown in Figs. 1, 2, 6, 7, provides the rotation for operating the entire device.

A four tooth cam or star wheel 35 Figs. 1 and 4, secured to the motor drive shaft 31, is driven by the motor in the direction shown by dotted arrow. Two cams, 38 and 39, are integral with the motor shaft and driven thereby. A restoring pin abutment 40 secured to the star wheel 36 is positioned in a predetermined spaced relation with the cams 38 and 39, cam 38 having a single depression in its outer surface.

A bar 4I for restoring switch I8 is slidably secured to bracket 42 by screw 43 and pin 44 in bracket 42. The bracket in turn is secured to frame Iby screws 45 as shown Fig. 1.

The upper end 4B of bar 4I is formed to lie in the path of the arm I9 of switch I8. The lower end 41 of the bar is shaped to make a camming contact with pin abutment 45. The bar is normally urged into its lowermost position, shown in Fig. 4, by spring 48, one end of which is secured to the bar at 49 and its opposite end secured to pin 44. A second restoring bar 50 is slidably secured to bracket 42 by screws 5I The upper end 52 of bar 50 lies in the path of arm I5 of switch I5. The lower end 53 of bar 50 is a camming surface shaped to engage cam 39. Bar 50 isurged in its lowermost position by spring 54 secured to the bar at 55, and at its opposite end by screw 56 inbracket 42.

Switch 51 secured to bracket 42 is of the snap variety and has its operating lever 58 positioned on cam 38, and is provided to control, among other things, the motor 35 for one revolution of assigns Itss'haft 31" per cycle; It isapparent that" when switch arms IG-and I9-shown in Fig. 3 are held in theirfdownward positions by magnet 2|, that nerevolution of the motor drive shaft 31 will causepin abutment 4U Fig. 4 to move the bar 4| upward and restoreswitch arm I9 to its initiarA position. Likewise, bar 5I! will be moved by camf 39" to restore switchlarm I5 of switch I5 to its normal position and during this cycle cam 218"l w-illfmove lever 58-to operate switch 51. Since thef's'witche's- I5,- I8 and 51 must functionin a predetermined time relation; the positioning of cams 38 and 39`and pin abutment 4Ilfbearsan important relation with the length of bars 4| and 5U; It isto be noted that a single camand a single bar could be employed as an equivalent tothe-'bars 4I and 50 if provided with properly spaeed projections to engage switch arms' I6 and I9:` at diierentitiines during its motion.

Acceptance guide chute assembly 59. Fig. 2, secured to lframe I and bracket 42, is provided fr* conducting dimes and quarters descending hr passagewaysv4 9' andV IIJ- directly to acceptance exit; 601` NickelsV descending in passageway 8 will be intercepted by runway 6| betterA shown' in Fig: 6?, secured to chute assembly 59 andguided by' guide plate' 62 into' the nickel reservoir' or magazine 63; bettershown. in Fig. 5; The maga zine B3 isintegral with al bridge plate 64; which platef is held in spaced relation with the bottom surf-ace of framey I by screws 65 and spacers 65.

Referring to` Fig. 2,` it` isl apparent that when magazine 633 is lled with nickels subsequent nickels` descending.l through passageway 8 will overflow" into: thech'ute* assembly 59 by virtueof the angular upper edgeiof the magazine 63'.`

Referring to Figs'. 2, 5 and 7, al single" pole double throw snap switch $1 is mounted toV a bracket 68; which: bracket is secured to frame I an'dmagazine 63;` The operating lever 69 of this switch is. formed toY project through an aperture |08? in" the lower portion oi' magazine 63. Itis1obvious thatr the switch will remain inpositionshownin Fig. lwhen at least ve coins are in" the? magazine; When less than ve coins arein` ther. magazine; the' switch lever 69 will move.I inwardly into the magazine, by virture of ai springwithin the switch 61, not shown, as illustrated inFig. 7. It is also apparent that when more: than" iive, coins accumulate in the coin magazine by==gravity the switch will operate' and assume the positionzshown Fig. 5.v

Referring tofFigs.'1-, 5 and: 8, a coin ejector slide'-10 is slidably secured inthe space between brldgevplate64- and the base of. frame I. This slide-is'pcsitioned by spacers 66. A circular hole 1I inl the slide 16, having adiameter` slightly larger thanr a five cent coin, isV normally positioned directly; beneath the coin magazine 63. Adjacent to the normal position of the hole; 1| is` a circular' aperture 12Figs. 5 and 8, inframe I. throughA which coins are ejected to a return cup, not shown.

Astriker-bracket 13 is securedto one end of the-slide 1|lV for successively engaging with each teotlrof4 the star; wheel 36 shown in Fig. 1. A latch. abutment 14 is integral with the opposite end of` the slide TIJand arranged for locking engagement with armature 15 of electro-magnet 16 which' armatureV is normally held in position shownlin Fig. l by'spring 11. Spring 18 is se.- cured to latch abtument' 14 at one'end` and has itsfopposite'end securedto pin 19 in frame I, whichnormally urges slide 10 toward its discharge: position.. Stop pin |09; ,integrar with: the

frame I, is positioned in thepath ofabuthient 14 to stop the slide 10 with its hole 1I in accu"- rate register with aperture 12 in frame I. A depression in the upper surface of slide 1U is provided to assure proper edge contact with one coin only when the slide is operated. It is now apparent that when coinsV are stacked in the magazine 63 andthe slide 10 isreleased by armature 15, the slide under the influencev of spring 18 will move the lowermost coin in the maga# zine 63 into the discharge aperture 12 Where the coin will fall by gravity to return cup, not shown. Upon the return of the slide to :normal position, the next lowermost coin in the stack will descend by gravity into the'hole 1I in slide 10 for subsequent discharge` Fig. 9 illustrates an alternate mechanical means for holding the operating. arms of the dime and quarter switches pending their release by bars 4| and 5|! shown in Fig. 4. A bell crank latch 8| pivotally secured in frame I having its upper end normally urged into the path of arm I9 by spring 82, will latch and hold the coin displaced arm I9 in position shown until bar 4| reciprocates as shown by arrow to strike abutment 83 on latch 8|, which will overcome the force exerted by spring 82 to dislodge the latch from arm I9, permitting the arm I9 to return to its normal position shown by dotted lin'es in Fig. 4, which means accomplish the same result as obtained with -the magnet holding means previously described.

Referring to schematic diagram Fig. l0, the elements in dotted enclosure 84 refer to the electrical components for initiating and operating a typical vending machine. Elements in the dotted enclosure 85 reier to the electrical components in the coin rejector, sorter and the change maker.

The electric elements related to a typical vending machine include an electric vending relay 3| adapted to operate a dual switch 34, which. comprises an electrically independent single pole double throw switch 86 and a normally open single pole switch 81. Electric signal. lamp 88 is provided to be illuminated when the machine is sold out. Another electric signal lamp 89 is provided to indicate when the nickel magazine 63 isA empty and only nickels can operate the ma'n chine. Electric device 9B indicates an electric motor, `electro magnet or other electrically initiated devicesfor operating the vending machine. Normally closed single pole switch 9| is adapted to beV momentarily opened during' thedelivery cycle of the vending machine. Single pole double throw switch 92 is operated only when the vend,- ing machine is sold out.

Referring to the dotted enclosure. 85. relay 2-1 in the changev maker includes` projection member 2S previously described and also a double pole single throw switch 3|).` The `electro-magnetic rejection device 22 is shown .having 23 carrying dime and quarter rejectprojections 25 and 2G. A single pole double throw switch B1, previously described, is adapted to be responsive to coins inthe magazine 63. Electro-magnet 'l' acting upon armature 15 isemployed to release the coin slide 1. Normally open single polecoin switches II; I54 andt Is, responsive to1ni`ckels, dimes and quarters:` respectively, are show-n` in their'normalopen positions with restoring bars 4I and Elli-related'to switches I5 and IiiA only?. The motor driven. pin abutment #il and cam 3s actingupon bars 4I andr5llrare also showni Ill-lees tric motor" 35. for. driving the mechanical. parts 75 of thefcoin changer is:shownoperatively.i related an arma-ture` to dualsnap switch 51 which comprises a single pole double throw switch 93 and a normally closed single pole switch 94 related to its operating cam 38.

Conductor 95 is connected to one side of a Source of power Li and is connected to one terminal of lamp 89, one terminal of electric device 90 and to the center pole of switch 92, and to one of each termina- 1 of coin switches l5 and I9, and to the normally open pole of switch 93. Conductor 95 is connected to the remaining side of the source of power L2 and connected with one pole of switch 81 and one terminal or lamp 33, one terminal of relay 3|, one terminal of relay k21, centerpole of switch B1, one terminal of electro-magnet 15, and one terminal of motor 35.

Conductor 91 connects the remaining pole of vswitch 81 with the remaining terminal of electric device 90. The center pole of switch 85 is connected to one pole of switch 9| by conductor 98; The remaining pole of switch 9| is connected to the normally closed pole of switch 92 by conductor 99. The normally open pole of switch 92 is vconnected to the remaining terminal of lamp 88 by conductor |09. Conductor i0! connects the remaining terminal of relay 3| with the normally open pole of switch 96 and the two operative poles of switch 39. Conductor 92 connects the remaining terminal of lamp 89 to the normally open pole of switch 61. One normally closed pole of switch is connected to the remaining pole of coin switch by conductor |93. Conductor |94 connects the remaining normally closed pole of switch 39 with the remaining poles of coin switches l5 and I8 and the remaining terminal of electro-magnet 16 and the normally closed pole of switch 93. Conductor |05 runs to the remaining terminal of electro-magnetic rejection device 22 and the remaining terminal of relay 21 and terminates at the normally closed pole of switch 94. The normally closed pole of switch 86 is connected to the remaining side of switch 94 by conductor |95. Conductor |01 connects the remaining terminal of motor with center vpole of switch 93.

In operation, and considering that the embodiment of the invention shown and described refers to a mechanism for making a unit sale of ve cents value, and is limited to the insertion of nickels, dimes and quarters, and assuming that the mechanism is in its initial position as shown in Figs. l, 2 and 10, and power lines LI and L2 are energized, then all components will be in positions shown in the drawings with the rejection device 22 energized and its projections 25 and 25 withdrawn, likewise the relay 21 will be energized with its projection 29 withdrawn. Then the deposit of a five cent coin for a single sale in the entry 3, Fig. l, will result in the coin being tested for Validity and transferred by gravity into the entrance passage 0, whereupon it will strike operating arm I2 to momentarily close switch E i, and then be guided by runway 6|, Fig. 6, into coin magazine 53.

In the event magazine B3 is filled, the coin will slide over the tapered entrance of magazine G9 by gravity into acceptance guide chute 59 through acceptance exit 60.

Referring to Fig. 10, the momentary closing of switch will momentarily complete a circuit from power line L! through conductors 95 and closed portion of the switch 86, through conductor 98, through switch'9|, through conductor 99, through switch 92, through conductor 95 to LI. Simultaneously, a circuit is completed from the power line Ll through conductor 95, through the electric device 90, switch 81, conductor 99, to power line L2. The electric device will then operate the vending machine through one cycle until switch 9| is'momentarily operated at the end of the vending cycle thus breaking the holding circuit through relay 3| and permitting its switch 34 to return to its normal position as shown, .which will complete the vending cycle and the delivery of the one unit of value. It is to be noted that when switch is momentarily closed by a five cent coin, a circuit of extremely short duration is completed through electromagnet 16 and the motor 35 through conductor |03, switch 30, conductor |04, the closed portion of switch 93 and conductor |91. However, the closing of this circuit is of insufficient durationto start the shaft 31 because of the relatively high ratio reduction connecting the motor 35. Furthermore, the armature 15 will not disengage from the coin slide 10 until the slide is moved by action of the motor. Hence the deposit of a nickel will operate the vending machine to deliver one unit of value but will not operate the coin slide 10. Even though the motor should be moved suiiiciently far to close the holding switch 93, the shaft 31 would make one revolution without operating the coin slide for the reason that after the passage of a five cent coin, the electro-magnet 16 remains cle-energized, preventing the arm 15 from disengaging from the abutment 14, as shown Fig. 1.

When the switch 34 is operated, it is apparent that the normally closed pole of the Switch 85 will open, thus opening a circuit through relay 21V and electro-magnetic rejection device 22, the action of which will be later described.

In the event the vending machine is empty, switch 92 will be held in displaced position which will permanently break the circuit through relay 3| and prevent its operation, and concurrently will complete a circuit from power line L2 through conductor 99, through signal lamp 80, through the then closed portion of switch 92, through conductor 95, to power line LI. The lamp 88 will then be illuminated and by appropriate nomenclature lighted thereby, indicate that the machine'is inoperative.

When a dime is deposited in the entry 3 for a iive cent unit sale, the dime will be tested for validity in rejector 2 and transferred by gravity into passage 9, Figs. 2 and 3, and thereby displace arm |6 of switch l5 whereby the arm will be held in displaced position by magnet 2|. The coin will continue its descent into acceptance guide chute 59, and thence through acceptance exit 50. Referring to Fig. l0, the closing of switch I5 will Vcomplete a circuit from power line 'LI through conductor 95, through conductor |04, to energize electro-magnet 15 through conductor to power line L2. Since conductor 04 also runs through the closed portion of switch 93, motor 35 will be energized through conductor |01 and conductor 95 which connects to power line L2 When the motor is energized, shaft 31 will begin its rotation in the direction shown by arrow, Fig. 1, which rotation will drive cam` 38 to shift the switch 51 from position shown Fig. 10 to its opposite position which will complete-ja holding circuit for the motor 35 through conductor |01-through switch 93 through conductor device 22. Wh-en the latter devices are thus deenergized, any coinsdeposited in the entry 3 will automatically be returned through rejection passageway 4 into chute 5 through exit 6 toa return cup, not shown. This operation is necessary in order that the vending machine and the change maker will have time to complete their respective functions before a second operation is ortainable. It is to be noted that the switch .94 is connected in series with the normally closed poles of switch 86, in order to provide positive means for cle-energizing of the relay 2T and the electro-magnetic device 22, regardless of whether the length of time for the operation of the vending device is greater or less than Athat of the changemaker.

The closure of the coin switch I5 which is held n-closed position by magnet 2l first completes a circuit through conductor IIl4 through the closed portion of switch 30 through relay 3I which will operate the switch 34 and cause the vending machine to complete a cycle in the same manner as was described for the nickel. Immediately `following' this operation the motor 35 will open switch 95 and de-energize the relay 21 and a portion of the switch 86. Simultaneously a tooth of the star wheel tt, shown Fig. 1, will contact striker bracket 'i3 of slideli and move it against the restraining action of spring 'I8 sufhciently far for the now energized electro-magnet I6 to disengage its armature from its normally latched engagement with abutment 74. It is to be noted that the electro-magnet'l'has remained energized by Virtue of a circuit therethrough established by the closure of switch I5. Whereupon the star wheel tooth in continuing its motion will disengage from striker bracket 13, which will permit the slideto'laterally move under the influence of spring 'I8 to slide the lowermost nickel in the magazine 53 into discharge aperture l2, Fig. 8, which coin is conducted by gravity into a return cup, not-shown. Upon the discharge of this nickel, which constitutes the change from the dime deposited, the cam 39, Figs. 1 and 4, driven by motor 35, will contact the lower end 53 of bar 5I) to move it upwardly whereby its upper end 52 will engage switch operating arm IS and break its magnetic contact with magnet 2l, permitting the switch to return to its normal position shown Fig. 1.

Referring to Fig. 10, the opening of switch I5 A will break the circuit established through electro-magnet TIS and permit the armature I5 to move to its downward position as :shown Fig. l, whereupon theslide returning from its nickel discharge position byvirtue of movement imparted by -the next tooth of the star wheel 36, `will return the slide to its latched position as shown Fig. 1. VThe motor will continue its rotation until its shaft 31 carrying cam 38 and the star wheel 35, has made one complete revolution whereupon the switch 5I, having its operating blade in` contact with cam 38, will open, thus restoring Athe ,entire apparatus to the position as .shown in Figs. 1 andlO.

A quarter deposited in the singleentry 3 for c Thexquarter Will continue its descent `throughacceptance exit-St `by the guiding action of chute assembly 59.

Referring to Fig. 1,0, the-closure of switch I8 will complete a circuit through electro-magnet 'I6 and the closed portion of switch 93 to energize motor 35,whereupon the cam i8 will move switch 51 to its opposite position, holding the motor 35 `and electro-magnet lt energized through the now closed, normally open portion of `switch -93, and breaking the circuit through relay 21!` and electro-magnetic rejection device 22, through theaction of the open circuit position'of switch 54. Thus the projection member 29 and i projections 25 `.and 26 are moved into rejector 2 to `reject any coins deposited in thev entry 3the same asduring the dime operation previously described. The closure of switch I 8 will prior to theoperation of motor 35 complete a circuit through switch `3EI through relay 3l. and thereby operate thevendingmachinein. the manner previously described for one unit of value. The star wheel `3I will` again rotate onerevolution and since 4the vdischarge of four nickels from themagazine is required, switch ,I8 will remain closed until pin, vabutment 4B on the star wheel contacts the lower end 41 of bar 4| Fig. 4, whereby the upper end 46 will strike arm I9 of switch I8 and dislodgcthe arm from its contact with magnet 2|, f.permitting the arm to return to its `normal ,upward position, thus opening switch i8.. Since Velectro-magnet 'Iii Was energized during the complete rotation of the star wheel ,36... its four ,teeth successively released and restored the slide 'I0 in the same manner as previously described, permitting the discharge of four nickels from the magazine 63, providing .the proper change fori-ive cent unit sale and returning all elements of the device to theirnormal positions. When the star wheel 3S returns to its neutral or normal position, after the fourth nickel is` discharged, it moves slide 'Ill .slightly to the right of the position shown in Figure l sumciently to `permit armature 15 to drop intolocking engagementand thereby freely engagerlatch abutment `I4 `whereupon spring ,'18 returns the slide 'III to the position vshown in Figure 1.

In the event that an excessive amount of coins of large denominationare used in the device,`it is possible that the coin magazine .S3 mayI become depleted of nickels-andto prevent improper operation under this condition, switch ,B'i associated with magazine 63, will be displaced to complete a circuit through signal lamp 89 from line LI, conductor'95, conductor H32, conductor S6, to line L2. The lighting of the lamp 8S is intended to illuminate certain nomenclature not shown, indicatingthe use of nickels only. Simultaneously, the circuit through electro-magnetic rejection device 22 'is broken, permitting projections 25 and 26 to enter the rejector 2, which will automatically reject dimes and quarters only, should they be deposited.

Referring to Fig. 9, it is now apparent that the bell crank latch can serve'the same useful purpose as the permanent magnet 2l for holding the dime end quarter switches in their closed positions until restored by the action of bars 4I and 50.

Having describedmy invention, I claim.:

l. The combination of an electric vending `ma.- chine adapted to operate one cycle and deliver one unit of value when energized and a coin operated mechanism and a change maker responsive to Aeach of a predetern'iined plurality of coins for one cycle-of .operation to operatesaid lvending machine one said cycle and deliver therefrom change coins of predetermined denomination including means forming a frame, a change coin passageway in said frame for normally conducting gravity propelled change coins of said predetermined denomination, means in said frame forming a plurality of other coin passageways, each of said other passageways adapted to conduct in an independent path gravity propelled coins of different other predetermined denominations respectively, a momentary electric switch positioned in said frame responsive to each coin of said rst mentioned predetermined denomination descending in its corresponding passageway, a plurality of 'other coin switches positioned in said frame, each of said switches corresponding with and responsive to coins of each of said other predetermined denominations respectively, a plurality of holding means in said frame adapted to temporarily and independently hold each of said other coin switches in displaced position when operated, electrically driven coin dispenser means for receiving and temporarily storing said change coins descending through said change coin passageway and for sequentially discharging said change coins when energized, cam means operatively positioned in said frame with respect to and driven by said dispenser means, restoring means positioned in said frame for movement by said cam means for restoring each of said other coin switches when held in displaced position by said corresponding holding means, relay means for energizing and deenergizing said vending machine, cam switch means driven and controlled by said cam means, a source of electric energy, electric circuit means connecting all said coin switches said dispenser means said relay means said cam switch means and said vending machine and said source of electric energy whereby the deposit of a coin of change coin denomination in Y its said passageway will momentarily operate said change coin switch and energize through a portion of said circuit means said relay means to operate said vending machine one cycle and deliver one unit of value and gravitate said change coin into said dispenser means and whereby the deposit of a coin of any of said other denominations in its corresponding said passageway will operate its said corresponding other coin switch which switch will be temporarily held in its displaced position by its said holding means and concurrently through another portion of said circuit means energize said relay means to operate said vending machine one cycle to deliver one unit of value and through another portion of said circuit means and through said cam switch means energize said dispenser means to discharge a predetermined number of coins of said change coin denomination and whereby the initial movement of said cam switch means will maintain a circuit for one cycle of operation of said dispenser means and whereby the predetermined movement of said cam means will operate said restoring means and restore said displaced other v coin switch.

2. The combination oflan electric vending machine adapted to operate one cycle and deliver one unit of value when energized and a coin operated mechanism and a change maker responsive to each of a predetermined plurality of coins for one cycle of operation to operate said vending ma-. chine one said cycle and deliver therefrom change coins of predetermined denomination including means forming a frame, a change coin passageway in said frame for normally conducting gravity propelled change coins of predetermined denomination into said change maker, means in said frame forming a plurality of other coin passageways, each of said other passageways adapted to conduct in an independent path gravity propelled coins of `different other predetermined denominations respectively, a momentary electric switch positioned in said frame responsive to each coin of each said denomination descending in i ts co1'- responding passageway, a plurality of other coin switches positioned in said frameeach of said switches corresponding with and responsive to coins of each of said other predetermined denominations respectively, a plurality of holding means in said frame adapted to temporarily and independently hold each of said other coin switches in displaced position when operated, a reject passageway in said frame connecting each of said passageways above said coin switches forming a reject junction with each said passageway, an electro-magnetic means in said frame having an armature projection extending into each said reject junction when deenergized for rejecting all coins descending in all said passageways and permitting all coins to descend in said passageways to said coin switches when said electromagnetic means is energized, empty switch means in said vending machine responsive to the last unit of value dispensed thereby, electricaily driven coin dispenser means for receiving and temporarily storing said change coins descending through said change coin passageway and for sequentially discharging said change coins whenenergized, cam means operatively positioned in saidframe with respect to and driven by said dispenser means, restoring means positioned in said frame for movement by said cam means for restoring each of said other coin switches when held in displaced position by said corresponding holding means, relay means for energizing and deenergizing said vending machine, cam switch means driven and controlled by said cam means, a source of electric energy, electric circuit means connecting all said 'i coin switches said dispenser means said electromagnetic means said relay means said cam switch means said vending machine said empty switch means and said source of electric energy whereby the deposit of a coin of change coin denomination in its said passageway will momentarily operate said change coin switch and energize through a portion of said circuit means said relay means tn operate said vending machine one cycle and deliver one unit of value and gravitate said change coin into said dispenser means and whereby the deposit of a coin of any of said other denominations in its corresponding said passageway will operate its said corresponding other coin switch which switch will be temporarily held in its displaced position by its said holding means and concurrently through another portion of said circuit means energize said relay means to operate said vending machine one cycle to deliver one unit of value and through another portion of said circuit means and through said cam switch means energize said dispenser means to discharge a premeans deenergize -said ielectromagnetic means to reject anyfsaid coins descending in any `said passageways. l

3. "Ihecom-bination of an electric `vending machine adapted to loperate one cycle and deliver one unit of value when energized and a coin operated mechanism and a change maker respon- -sive to each of a predetermined plurality of coins for one `cycle of operation `to operate said vending machine one said cycle and deliver therefrom change coins of predetermined denomination including means forming a frame, a change coinpassageway in said frame for normally conducting gravity propelled change coins of oredetermi-ned denomination into said change maker, Vmeans in said framejforming a plurality of other coin passageways, each of said other passageways adapted to conduct in an `independent 4path gravity propelled coins of different other predetermined denominations respectively, a momentary,electric `switch positioned in said frame responsive to each coin of each said denomination descending in `its corresponding passageway, a plurality of other coin switches positioned in .said frame, :each `of saidswitches corresponding with and responsive to coins of each Qf said ,other predetermined denominations `respectively, a plurality of holding means inwsaid frameadaptedto temporarily and independently hold each of, said other coin switches in displaced position when operated, a reject passageway in said frame rconnecting each ofsaid other passgeways above said coin switches Vforming a reject junction with each said passageway, an electromagnetic means in said frame having an armature projection extending into each saidlreject junction when deenergized `for rejectingall coins descending in all said passageways and permitting all coins ato .descendzin .said passageways to said coin switches when said electromagnetic meansjs energized, electrically driven coin dispensermeans for receiving and temporarily storing `said change coins descending through `.said changecoinpassageway and for sequentiallydischarging said change coins when energized, including safety switch means responsive to the discharge of the last said change coin in said dispenser, cam means operatively positioned in said frame with respect to and driven by said dispenser means, restoring means positioned in said frame for movement by said cam means for restoring each of said other coin switches when held in displaced position by said corresponding holding means, relay means for energizing and deenergizing said vending machine, cam switch means driven and controlled by said cam means, a source of electric energy, electric circuit means connecting all said coin switches said dispenser means said electromagnetic means said relay means said cam switch means said vending machine said safety switch means and said source of electric energy whereby the deposit of a coin of change coin denomination in its said passageway will momentarily operate said change coin switch and energize through a portion of said circuit means said relay means to operate said vending machine one cycle and deliver one unit oi. value and gravitate said change coin into said dispenser means and whereby the deposit of a coin of any of said other denominations in its corresponding said passageway will operate its said corresponding other coin switch which switch will be temporarily held in its displaced position by its said holding means and concurrently through another portion of said circuit means energize `said relay means yto operate ^`sxaiidlvending machine one cycle to 4deliver one unit -of value and through anotherportionof saidcircu'it means and Ythrough said camswitch means energize -said dispenser means fto discharge Aa predetermined number of coins of said change coin denomination `and whereby the initial vmovement of said cam switch means will `maintain -a circuit for one cycle of operation offsaid dispenser `means and whereby the predetermined-movement of said cam means will operate said restoring means-and restore said displaced other coin switch and whereby Ythe absence of said changecoins insaid dispenser will Aoperate said Asafety switch and through another portion of said circuit `means deenergize said electromagnetic means to reject said coins of otherpredetermined denomination descending in their corresponding passageways.

l4. AIn `coin dispenser of `the character 'described means forming `a frame-a coin discharge slide 4positioneolffor movement insaidf-framedrom aloading position `-to Aan unlocking 'position and to `a discharge position, a coin magazine secured in said frame above said slide for retaining #a plurality of like coins in-a coaxial 'stack forseduential discharge, said slide having a pocket ifor receiving by gravity and `temporarily Aholding therein the lowermost Acoin of said stack when said slide is in `said loading position, discharge spring meansjfor urging said slide toward said discharge position, an electromagnet positioned in said frame in `proximity with said slide, va movable armature attractable to said electromagnet when energized, spring means normallynrging said armature 'in `retracted position, a latcl'i abutmentintegral `with said slide normally in I`l`oclz ing engagement with said `armature against Vthe restraining action of :said discharge spring means during movementof `said'slide 4from said loading position to said unlocking position, cam meansjin s aid frame, means for operating said cammean's, said `,cam 4means,being provided witha `plurality ofv engaging means vand being positioned lwith respecttosaid vslide for engagingsaid slide and,

when `saisi ,gam 4:Deans is Operated, for Hlm/int` said slide from its dischargepositiontoits unlocking position whereby a coin in said pocket will be discharged, when said electromagnet is enerf gized, only when said ca m means first moves said slide in one direction to its unlocking position to permit disengagement of said armature from said abutment and permit said discharge spring means to move said slide in the opposite direction to its discharge position to discharge the coin in said pocket, and means including one of said engaging means for moving said slide from its discharge position to its unlocking position to permit the reengagement of said armature with said abutment when said magnet is deenergized.

5. In a coin dispenser, a frame, a coin discharge slide positioned for movement in said frame from a loading position to an unlocking position and to a discharge position, a coin magazine secured in said frame, said slide having a pocket for receiving and temporarily holding therein the lowermost coin of said stack when said slide is in said loading position, discharge spring means for urging said slide toward said discharge position, an electromagnet positioned in said frame in proximity with said slide, a movable armature attractable to said electromagnet when energized, spring means normally urging said armature in retracted position, a latch abutment integral with said slide normally in locking engagement with said armature against the restraining action of said discharge spring means during movement of said slide from said loading position to said unlocking position, cam means in said frame, means for operating said cam means, Vsaid cam means being provided with a plurality of engaging means and being positioned with respect to said slide for engaging said slide and, when said cam means is operated, for moving said slide from its discharge position to its unlocking position whereby a coin in said pocket will be discharged, when said electromagnet is energized, only when said cam means rst moves said slide in one direction to its unlocking position to permit disengagement of said armature from said abutment and permit said discharge means to move said slide in the opposite direction to its discharge position to discharge the coin in said pocket, and means including one of said engaging means for moving said slide from its discharge position to its unlocking position to permit the re-engagement of said armature With said abutment when said magnet is deenergized.

6. In a coin dispenser, a frame, a coin discharge slide positioned for movement in said frame from a loading position to an unlocking position and to a discharge position, a coin magazine secured in said frame for retaining a plurality of like coins in a coaxial stack for sequential discharge, said slide having a pocket for receiving and temporarily holding therein the lowermost coin of said stack when said slide is in said loading position, discharge spring means for urging said slide toward said discharge position, an electromagnet positioned in said frame in proximity with said slide, a movable armature attractable to said electromagnet when energized, spring means normally urging said armature in retracted position, a latch abutment integral 40 with said slide normally inlocking engagement with said armature against the restraining action of said discharge spring means during movement of said slide from said loading position to Said unlocking position, cam means having a plurality of engaging means and means for operating said cam means, said cam means being arranged to rotate from neutral position With said slide in locking engagement one cycle and back to neutral position, said cam means being positioned 5 with respect to said slide for engaging and moving -said slide, upon initial rotation, from its loading position to its unlocking position to permit disengagement of said armature fromsaid abutment, when said electromagnet is energized, and permit said discharge spring means to move said slide in the opposite direction to its discharge position to discharge the coin in said pocket, and means, during the return of saidV cam means to neutral position,vincluding Aone of i; said engaging means for moving said slide and latching abutment slightly beyond locking position so as to permit the re-engagement of said i armature with said abutment when said magnet is deenergized.

FRED E. WALLIN.

REFERENCES CITED The following references are ofy record in the 111e of this patent:

UNITED STATES PATENTS Number Name Date 952,809 Jackson Mar. 22, 1910 1,795,056 Tomarin Mar. 3, 1931 1,942,443 Neumann Jan. 9, 1934 1,946,985 Parker et al. 'Feb. 13,1934 2,022,110 Erbe Nov. 26, 1935 2,097,610 Wilsey Nov. 2, 1937 2,112,511 Williams Mar. 29, 1938 2,213,651 I-Iall Sept. 3, 1940 2,250,051 Patzer July 22, 1941 2,262,322 I-arris Nov. 11, 1941 2,442,174 May May 25, 1948 y FOREIGN PATENTS Number Country Date 312,139 Germany May 12, 1919 379,770 Great Britain Aug. 31, 1933 503,257 Great Britain Apr. 4, 1939 695,517 Germany Aug. 27, 1940 

